Plugin version for 4.16 works like a charm, there was a workaround that had to be done back in 4.15 which is no longer needed in 4.16, the rest is all the same.
For the full in-depth information regarding the plugin’s features check out the Mirror Animation System Documentation by clicking this link : https://www.dropbox.com/s/d49mt1lyd1bdken/Mirror%20Animation%20System%20Documentation.pdf?dl=0